pub fn pvheader_scan(dirs: &[&Path]) -> Result<Vec<PathBuf>>
Scan a list of directories for block devices containing MLV PV labels.
Prefix searches with a type followed by a colon (e.g.
fn:) to restrict the search to a given type.
Accepted types are: fn, mod,
struct, enum,
trait, type, macro,
and const.
Search functions by type signature (e.g.
vec -> usize)